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D4482-1headline bar  Robert Krueger, Horticulturist, documents change in plant health**Image Number D4482-1** At the USDA-ARS-NCGRCD, horticulturist Robert Krueger reads positive (infected) symptoms of the "Concave gum" disease control on the "Dweet tangor" indicator. These tests are conducted on site to keep the plants healthy, ensure the plants are watered, ensure greenhouses are functioning, and facilities are secure. Other steps in the sanitation process include lab testing and therapy.   Photo by Robert Krueger.  640 pixels wide: (D4482-1.jpg)   Please visit our Image Gallery.


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